Merge "Restore the correct state of the statusbar, navbar, and keygaurd after an density change"

packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBar.java

@@ -161,6 +161,11 @@ public class CarStatusBar extends StatusBar implements
         }
 
         buildNavBarContent();
+        // If the UI was rebuilt (day/night change) while the keyguard was up we need to
+        // correctly respect that state.
+        if (mIsKeyguard) {
+            updateNavBarForKeyguardContent();
+        }
     }
 
     private void addTemperatureViewToController(View v) {
@@ -211,6 +216,13 @@ public class CarStatusBar extends StatusBar implements
     @Override
     public void showKeyguard() {
         super.showKeyguard();
+        updateNavBarForKeyguardContent();
+    }
+
+    /**
+     * Switch to the keyguard applicable content contained in the nav bars
+     */
+    private void updateNavBarForKeyguardContent() {
         getComponent(NotificationsUI.class).closeCarNotifications(0);
         if (mNavigationBarView != null) {
             mNavigationBarView.showKeyguardButtons();

packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBarKeyguardViewManager.java

@@ -64,4 +64,12 @@ public class CarStatusBarKeyguardViewManager extends StatusBarKeyguardViewManage
         CarStatusBar statusBar = (CarStatusBar) mStatusBar;
         statusBar.showUserSwitcher();
     }
+
+    /**
+     * Do nothing on this change.
+     * The base class hides the keyguard which for automotive we want to avoid b/c this would happen
+     * on a configuration change due to day/night (headlight state).
+     */
+    @Override
+    public void onDensityOrFontScaleChanged() {  }
 }

packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java

@@ -538,7 +538,7 @@ public class StatusBar extends SystemUI implements DemoMode,
     private BatteryController mBatteryController;
     protected boolean mPanelExpanded;
     private UiModeManager mUiModeManager;
-    private boolean mIsKeyguard;
+    protected boolean mIsKeyguard;
     private LogMaker mStatusBarStateLog;
     protected NotificationIconAreaController mNotificationIconAreaController;
     @Nullable private View mAmbientIndicationContainer;